Alonzo e



(No Model.)*

A. E. RHOADES. RISE-ROLL MBGHANISM FOR WARPING MAGHINES.

No. 500,541. Patented June 27, 1893.

UNITED STATES.

PATENT OFFICE.

ALNZO E. RHOADES, OF I-IOPEDALE, MASSACHUSETTS, ASSIGNOR TO THE HOPEDALE MACHINE COMPANY, OF SAME PLACE.

RISE-ROLL MECHANISM FOR WARPlNG-MACHINES.

SPECIFICATION forming part of Letters Patent No. 500,541, dated June 27, 1893.

Application filed February 18, 1893. Serial No. 462,827. (No model.)

To allwhom it may concern,.-

Be it known that I, ALONZO E. RHOADES, of Hopedale, county of lVorcester, State of Massachusetts, have invented an Improvement in Rise-Roll Mechanisn for Warping- Machines, of which the following description, in connection with the acconpanying drawings, is a specification, like letters and figures on the drawings representing like parts.

It is custonary in warping machines to mount the rise-reli for taking care of the slack in the warps, on ind'ependent vertically movable bars or bearings sustained by suitable weights, but such construction is objectionable because of the liability of the roll descending unequally at its ends. To obviate this trouble, I have devised means whereby the rise-roll is compelled to move for eXactly the same distance at each end, and this I have accomplished by providing the bearing bars with rack teeth which are engaged by pinions on a cross shaft,said shaft having a suitable drurn from which is suspended a weight.

Figure 1, is a partial end view of a sufficient portion of a warping machine with my improvenents added to enable my invention to be understood. Fig. 2, is a left-hand side view thereof, partially broken out,however, at one end to better show the construction of the 0 parts; and Fig. 3,a detail to be referred to.

The frame-work A, the reed a, and the guide-rolls b, c, d, are and may be of any usual or suitable construction.

The rise-reli e has its journals in suitable 3 5 bearings at the upper end of bearing bars e', e' fitted in suitable vertical guide-Ways form ed at the inner sides of the frame-work, said bars being suitably toothed, as at 2, as best shown in Fig. 2,' said teeth being engaged by the 0 pinions f, f' on ashaft f extended across the nachine and having its journals supported in suitable stands f of the frame-work, said shaft serving to connect said bearing bars in such manner that they must rise and fall in 4 5 unison, and consequently the ends of the riseroll must rise and fall in unison, and the riseroll once set truly horizontal will. always remain so. This rise-roll is made to bear constantly and uniforrnly against the warp w from one to the other selvage warp bya force measured by the weight g which may be made more or less according to the material being acted upon, said weight being shown as con- *nected by a fiexible connection h, a cord or chain, adapted to be wound on a drum m, preferably of conical form and grooved to resemble a fusee. The shape of the bearing bars in cross section is best shown in Fig. 3, and as shown in said figure, in the top of each bar is a depression, as at 6 to receive the journal of the rise-roll e. The bearing bars are provided at their back and front edges with V-shaped grooves 3 see Fig. 3 which are entered by V-shaped projections 4 of the uprightguide-Ways n, shown as bolted to the frame-work by bolts 'n'.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a warping machine, guide rolls over 7o which the warp threads run from a set of spools to a beam, and a rise-roll or bar over which said threads run, said rise-reli or bar being arranged to vary its level as the tension on the warp threads changes, combined with guides to receive and support the ends of the said rise-roll or bar, and devices including rack teeth and pinions to nornally lift the rise-roll or bar at its opposite ends for equal distances and always maintain said roll or bar So in horizontal position throughout its movenents, substantially as described.

2. In mechanism for controlling warps, guide-rolls, and a rise-roll and toothed bearing-bars for the journals of said rise-roll, combined with a cross-shaft having gears to engage the teeth of and connect the said bearingbars, and a weight co-operating with said shaft to nornally keep the rise-reli pressed toward the warp, the combination being and go operating substantially as described, whereby uniformity of movement and action of the rise-reli is insured, as set forth.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALONZO E. RHOADES.

Witnesses:

WM. W. KNIGHTs, O. H. LANE. 

